@koahnig You are confusing Industrial Protocol with Internet Protocol. EtherNet/IP is an industry standard based of CIP used in build automation in assembly lines. This is the protocol used by most (if not all) Programmable Logic Controllers (PLC). @MMRtheDeveloper we've been using https://github.com/EIPStackGroup/OpENer in our Qt app to talk to our PLC. However, EtherNet/IP is proprietary and even if OpENer is open source, you still need to buy a license from ODVA. I don't think there is anything else out there already made or adapted for Qt.